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the oso landslide exposed the underlying lithology of the hillside, which features a unit of clay (deposited in a pro-glacial lake) covered by glacial outwash sand (meltwater deposits). similar lithology is found throughout the puget sound and adjacent areas. based on what you know about the physical properties of the two sediment units, how do you think this particular pre-existing condition increases the risk of landslides?

Respuesta :

The oso landslide exposed the underlying lithology of the hillside, which features a unit of clay in many situations, the sediment is altered by the meltwater that moves off the ice sheet after it has been deposited by a subsiding glacial mass.

Additional icy landforms are produced by this additional mode of transport and deposition. In contrast to work, these designs are typically arranged by grain size because flowing water is the primary mode of transportation.Similar to a canal, water flowing along the glacial mass's base carries and deposits silt.

An esker is a sedimentary edge that has been twisted by the flow of a meltwater stream under the ice. The esker becomes visible as the frozen mass melts and retreats.When water flows over or through the ice, it may leave behind sediment that gradually builds up into a hill. The hill that frames the kame slope is left behind as the ice sheet retreats.this particular pre-existing condition increases the risk of landslides.

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